We barley have a relationship and there's problems

I app**** for a new line(Fibre) with Afrihost and Vumatel and on Monday my account was debited with an amount of R399 and I was told someone will contact me to arrange for a convenient time to come and install the line. I called back on Monday to update my contact details and I was told everything has been updated and in order but no one contacted me, I then called on Wednesday to find out what the delay is and I was then told it's still within turn around time and I confirmed if my details were correct and I was again assured that all is good. I then called this morning to find out what the issue is and I am told that they tried to contact me on my old number after I called in 3 times to update my details, do I need to write a letter to parliament 1st before someone does what they supposed to do? Guys if it really is a hassle to update something so small as a contact please let me know so I can look for another service provider. My account has been debited and I still do not have any service from you and I need to keep following up. Is this the type of service I should expect going forward? I am barely a client and already we have problems, come on guys if this is what I am signing up for then I am not interested. Can someone please call me to fix this as I am the 1 that keeps calling if it's an issue then please let me know. Can I have feedback on this ASAP. TODAY PLEASE!!!